Animated the PathUtils Sample to show path contours

gm/gradients.cpp

Index: gm/gradients.cpp
diff --git a/gm/gradients.cpp b/gm/gradients.cpp
index 97f8fdaca8b5813b06ae010fddf4dda8f1113fa4..164a6a5232280f3616ec2a3d7274bbc7afaf9061 100644
--- a/gm/gradients.cpp
+++ b/gm/gradients.cpp
@@ -17,7 +17,7 @@ struct GradData {
 };
 
 static const SkColor gColors[] = {
-    SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
+    SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK,
 };
 static const SkScalar gPos0[] = { 0, SK_Scalar1 };
 static const SkScalar gPos1[] = { SK_Scalar1/4, SK_Scalar1*3/4 };